Database Users

Battery heats up...

I just had a couple of longish calls in a short period. Both averaged about 30 minutes or so.
The phone is HOT. It is hot on the screen and battery side. This is not the first time the phone as started to get warm after long use.
This has never happened on my Raphael. I had it happen the other day while I was using the GPS a lot too. This seems like a very bad thing to me as heat will destroy the battery and possibly chips.

Hmmm....supposedly from the HTC site:
Why does the phone heat up when I’m charging the battery or when I’m making long duration calls? more
It is normal for the device to heat up during charging. After charging, it will return to its normal temperature. It is normal for the device to heat up when you are using the same function for a long time, such as making long duration calls or recording a long video clip. Please rest assured that all HTC devices are factory tested before released. Was this helpful? Yes | No
(I say supposedly because only way to get it was using Google Cache...the page didn't pull up from the link.)
But this isn't 'warm' like I would expect from a battery...this feels hot, like when I tell someone not to put laptop on their lap because blocks vents...and then have them put hand on their laptop. That kind of hot.

Install System info widget and check the temperature of your battery, should be at 98F - 106F

I've had mine get too hot a few times. I'm assuming that's what this means, but when the phone is hot, I see the led indicator light alternate flash between green and Orange. I've taken out the battery and let it cool down and then everything was normal again. I'm beginning to agree with other people that I don't like this phone. I never had this problem, or any problem, with my Samsung moment. If this crap continues with this phone, I am giving the Samsung epic some serious thought. People have ranted and raved HTC phones. The Evo being my first one, I'm not very impressed with it once I played with it for awhile. Yeah, the specs looked impressive on paper but in real life, I don't care too much for it. I guess I will wait and see what happens.
Sent from my PC36100 using XDA App

Any idea why the phone would get warm when screen is off and you have no background apps running? I get this at work amd im sure its not caused by signal searching Im outside all night

My phone shut down from heat today.
I got into my car, turned on gps and bluetooth, put the phone into the mount, and started navigation. Sure enough, the thing shut down in about a min. The car and the mount were kinda hot too.
I had to take off the silicone case and point 1 air vent at the phone, to get the temperature to a pretty cool 31C (with charging at the same time).
On its own, I haven't seen the battery heat up, especially when the screen is off.
Perhaps that batter is defective, or you have a rogue process that's running the battery down.
How fast does your battery drain when it heats up, and normally?
The normal speed for draining the battery with the screen off is about 1% per 1 hour.

Covers, cases, holsters, in your pocket, being in a hot car (even not in direct sunlight), etc. Pretty much anything that can keep the heat from escaping the phone or add to the phone's temperature.
I hope cyanogen can be a miracle maker with the custom rom he's making, because this phone's quirks are getting on my nerves. Yeah, it's past the 30 day return deadline.
Sent from my PC36100 using XDA App

herbthehammer said:
Covers, cases, holsters, in your pocket, being in a hot car (even not in direct sunlight), etc. Pretty much anything that can keep the heat from escaping the phone or add to the phone's temperature.
I hope cyanogen can be a miracle maker with the custom rom he's making, because this phone's quirks are getting on my nerves. Yeah, it's past the 30 day return deadline.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Which other phone can run 1Ghz processors and not overheat under full load and inside a case?
I think common sense tells me I should have expected that.

I get pretty good battery life from my evo. 20 hours of moderate/high usage took me to 30-40% but I work in a pretty well air-conditioned ambulance and drive around with my phone in my lap most of the time or in my pocket on occasion and when I pick it up sometimes the screen and back cover are warm. I look at battery temp and its like 32-36 degree celsius idling like that
Edit: phones naked btw no screen protector or case for now

After a couple hectic days of ebook reading and killing my battery my phone was getting hot like really randomly and when I had the screen on for like 10 mins or more, or when I charged it or pretty much if I even looked at it wrong! On a side note I have it in the body glove case from Sprint. Also my battery life was horrible. I was going down to like 30% in like 7 hour of practically no use.
Now I was running completely stock and unrooted( I hadn't felt the need to root yet) My solution was I rooted, installed DC rom then and I believe this is what fixed it cleared my battery stats from the recovery menu. Bam my phone hasn't even gotten warm since. Also it's been a week since I did this, and I'm getting crazy battery life now( like I'm down to 70-80% in 7 hours now with light use)

15 minutes of voice call eats 16% battery =/

I keep hearing some people claim how "great" their Vibrant's battery is. I am on my third Vibrant and battery life has been terrible on all of them. Just recently I noticed ~16% of my battery got drained for ~15 minute voice call. (The attached screenshot shows voice call using 27% but at that time my battery was at around 39%, which means the 15 mins took about ~16% total battery.) I just passed my 14-days buyer's remorse, so exchanging it (unless I want a "like new" one) or returning it are not an option. Any suggestions on how to improve battery life? I already keep the brightness on the screen to the lowest it gets.
Thanks!

Hmm that defintely is not normal. I would check with the store in getting another replacement. 15% drain on 15 min call is not normal for any phone.

There is a bug where if you power down the phone while it's charging, then the reported battery % is higher than actual. Perhaps the seemingly fast drain is a result of the reported value "catching up" to the actual level.

Edit: So I figured out where you're getting your numbers .
Still doesn't seem right though, did you notice the battery percentage before the call by any chance?

Chalup said:
There is a bug where if you power down the phone while it's charging, then the reported battery % is higher than actual. Perhaps the seemingly fast drain is a result of the reported value "catching up" to the actual level.
Click to expand...
Click to collapse
My rooted G1 had that same bug. Start charging it, power it down, power up and from completely dead it would show around. 24% in a couple minutes of charging. This phone I've noticed does it as well as newer blackberry's. Bizarre...
What I would suggest is draining the battery till it dies, charge it back up fully and see if you can have it happen again. Could've been a fluke.
Sent from my awesome Vibrant using XDA App

DarkAgent said:
I keep hearing some people claim how "great" their Vibrant's battery is. I am on my third Vibrant and battery life has been terrible on all of them. Just recently I noticed ~16% of my battery got drained for ~15 minute voice call. (The attached screenshot shows voice call using 27% but at that time my battery was at around 39%, which means the 15 mins took about ~16% total battery.) I just passed my 14-days buyer's remorse, so exchanging it (unless I want a "like new" one) or returning it are not an option. Any suggestions on how to improve battery life? I already keep the brightness on the screen to the lowest it gets.
Thanks!
Click to expand...
Click to collapse
looks like a bad battery reading to me.
Complete charge, complete discharge, and complete charge should reset it.

Yeah the percentages do need to be calibrated and sometimes they are off a bit, say 100%-90% actually often goes faster than 80%-70%.
The batteries are also partly responsible since discharge Ah is not a completely linear relationship with voltage (which is why the percentages need calibration).
I would say unless you have a rogue application on your phone eating battery it is more likely just how it is being reported.

bchalk said:
Yeah the percentages do need to be calibrated and sometimes they are off a bit, say 100%-90% actually often goes faster than 80%-70%.
The batteries are also partly responsible since discharge Ah is not a completely linear relationship with voltage (which is why the percentages need calibration).
I would say unless you have a rogue application on your phone eating battery it is more likely just how it is being reported.
Click to expand...
Click to collapse
So if battery A has x% greater mAh than battery B it does not mean A has x% greater battery life?

Chalup said:
So if battery A has x% greater mAh than battery B it does not mean A has x% greater battery life?
Click to expand...
Click to collapse
Yes, if the phones are identical.
Sent from my SGH-T959 using XDA App

I'm having same issue. Battery life on my Vibrant is just horrible. I can barely go half a day until it's fully discharged and that's about 30 min talk time an hr maybe browsing apps and internet and a little WIFI/BT. Just for example I charged it after complete discharge and took it out at 11.30 pm last night, drove my brother to the airport and back around 1.30 and while it was sitting in the car and a few calls I made, it already went down to 74%, I purposely left it without charge till morning.... at 8am it was showing 47%... WTF!!
I have rooted the phone with update.zip, I have installed ATK and have Crazy settings on it.... one thing I don't get is that after it kills apps, they keep coming back every few seconds. Also brightness is at the lowest and no live wallpaper...
UltimateJuice by the way is showing 1.58 times, which is BS... right now it's 10.30AM and its down to 38%....
Any help would be appreciated!

Try not using atk

Chalup said:
Try not using atk
Click to expand...
Click to collapse
This
Sent from my SGH-T959 using XDA App

http://phandroid.com/2010/08/25/dro...roid-phone-battery-life-comparisons/#comments
Vibrant's battery life does suck, even with the supposedly power efficient processor and super amoled!!!!!!
Samsung has some more work to do. Hopefully, the froyo update can alleviate the problem!!!

M5devil said:
I have rooted the phone with update.zip, I have installed ATK and have Crazy settings on it.... one thing I don't get is that after it kills apps, they keep coming back every few seconds. Also brightness is at the lowest and no live wallpaper...
UltimateJuice by the way is showing 1.58 times, which is BS... right now it's 10.30AM and its down to 38%....
Any help would be appreciated!
Click to expand...
Click to collapse
Read this first.
http://android-developers.blogspot.com/2010/04/multitasking-android-way.html
Anytime the screen is on its eating battery. We have the best screen in the market. If you really want a conservative wallpaper use something almost all black or solid black. When a AMOLED screen is displaying black the LEDs are off.
For those "apps that keep showing up" those are due services that are running in the background. If you don't use the app often set the notifications to a lower time or set it to update manually.
If you've rooted there is a thread on "how to keep your phone quick and snappy" read it. Also fix your permissions through recovery. Rogue apps apps can drain battery.
after 3hrs of on & off hard using (minus extra long phone calls >45mins) I can pull 12-16 hours easily on one charge.
Look into things like eugenes vibrant 6 & JACs UV(under volted) kernel.
GL and car chargers are awesome!
Vibe the XDApp

Battery life on my Vibrant has been superb. You might need to change settings or something. This screen shot was for today with lots of calls and market shopping and I even watched a movie. I do not use a killer, yes I'm rooted with lots of tweaks to my notification bar. I'm using the spiritbomb lwp and its been great.
Sent from my SGH-T959 using XDA App

Unfortunately, the battery life on the Vibrant just sucks, compared to the iPhone.
I came to a Galaxy S and a Vibrant form the iPhone 3Gs.
With the same style of usage, the iPhone lasts at least 40% longer than the Galaxy/Vibrant.
I like the phone a lot, but am really unhappy to have to constantly think about how I use it, to avoid it dying on me before the end of the day.
Basically, with moderate use, it will last for a day, but if I go out after work and do a little texting or take a few pictures, it will die before I get home.
12-14 hours is really not good, since with my old iPhone I used to be able to last almost two full days without recharging.
Plus, the blocking of the camera at 15% of battery life is a truly idiotic decision by Samsung.

Thanks for your feedback! I am newbie in the Android world, as I come from the Apple planet. It just takes time to get used to it.
As for XDA App, where can I get it?

jesrazo said:
Battery life on my Vibrant has been superb. You might need to change settings or something. This screen shot was for today with lots of calls and market shopping and I even watched a movie. I do not use a killer, yes I'm rooted with lots of tweaks to my notification bar. I'm using the spiritbomb lwp and its been great.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
I am looking into the mod for the notification bar, specifically the battery. I have seen a circle battery with percentage, where do I get one?

XDA is your Friend
Search XDA for all ur app and theme needs, as for the Iphone being better on battery. I dont doubt its better, but from my experience and many family and friends showing me there iphones they are always tethered to a power source. Theres no better test than driving 300+ miles a day every day and coming back to the hotel and seeing my phone tell me i have been using it for 20+ hours and i still have 25% charge. I am constantly using my phone for calls, text, movies and such. Without my phone my wife would probably divorce me lol The amount of travel i do via plane, train and automobile is all the real world facts i need. Vibrant is a keeper.

Yes it sucks.
And under 15% it's not allowing me taking pictures!
Come on, I know I am under 15%, but I still want to take 1 or 2 pic!!

Warm phone and low battery observation

I was going to post this in response to a fast draining battery post, but think this is a little more important to others that might find it interesting. I noticed on Tuesday I was at home on the couch and I had a few apps running like normal and my battery was around 80 or so %, but nothing I would ever consider CPU or even GPU intensive. I think email and maybe web browser. I decided to check the weather using the "Weather and News App" I don't have wifi on and I have location via wireless turned off so I manually entered in my location. I put the phone down and I swear 30 minutes later my phone felt really warm and I went from 80 down to around 50 fast.
Yesterday I was out with the wife shopping and I had around 90%. I fired up shopsavvy because she was interested in some coffee maker and of course I had GPS off and wireless location off because all I wanted was a web price. I did my scan and put my phone in my pocket. An hour later I noticed my phone felt a bit warm and it went from 90 down to 36.
I don't know if its a combination of other things I had running, wireless and GPS off and the vibrant was working hard to try and connect or what. It was just an observation I had and basically I just shut down and turned my vibrant back on. Battery was still low and the warm area high up on the phone cooled down. I thought it was the battery at first, but since the battery is on the lower half of the phone it had to be something else.

I have had similar suspicions in the last 10 days or so but haven't narrowed it down. If you figure something out please post.
Sent from my SGH-T959 using XDA App

Same heat related battery drain
Same exact issue here. Phone was at 100% at noon, I was out in the hot sun with the phone in my pocket from that point on and the phone was dead by 5pm. Any help is appreciated as I too thought it was the battery.

My phone warms up a little when I use either the GPU (gaming) or Cellular radios (continious surfing or tethering). The battery goes down because the connections or GPU is sucking juice.

Same things with my phone, battery simply drains even when phone is off in m pocket. It always feels warm and obviously something is sucking the juice out of it.

Yea, battery is the one and only thing I hate with a passion with my phone atm. Can only hope that it's just an issue that can and will be fixed via software on 2.2 :/

I noticed that my sd card is the warmest part of the back of the phone when it's in use. Have a class 4 pny 8gb from walmart

I had to uninstall shopsavvy bacause the phone was getting really warm and was draining battery very quickly.
I don't think it's shopsavvy, but maybe a faulty gps driver or the whole location awareness system.
Sent from my SGH-T959 using XDA App

GS2 bug VERY slow charging and hot phone

i did not see a topic about VERY slow charging and hot phone issue
first of all, typically for 10% it takes me 3 hours to fully charge my GS2, and it is warm but not hot
randomly it seems to get a bug that makes the phone charge VERY slow like 15% an hour or total 6 hours, and at the same time the phone is much hotter than normal charging
i had Android Assistant running and here is what is normal idle system spec:
CPU
system 2%
user 5%
idle 93%
ram
used 329MB
free 507MB
battery temp 97F
when the bug occurs i go to the stock task manager, close all apps, and clear ram memory, and here are the system specs after:
CPU
system 20%
user 40%
idle 40%
ram
used 460MB
free 377MB
battery temp 114F
i have not been able to isolate the process/app/bug anyone else?

I use Watchover (freely available on the market), which can give you a list of processes and the percentage of CPU they use. You can then identify the processes that eat the most of your CPU.

It's not a bug but a feature
The phone takes about 3 hours to charge when no apps are running.
More, if apps are running and even more if you are using the phone.
Totally normal for this type of phone/battery.
So if you want it to charge as quickly as possible make sure as little as possible is taking power....

David Roosendaal said:
It's not a bug but a feature
The phone takes about 3 hours to charge when no apps are running.
More, if apps are running and even more if you are using the phone.
Totally normal for this type of phone/battery.
So if you want it to charge as quickly as possible make sure as little as possible is taking power....
Click to expand...
Click to collapse
but i stop all APPs in task manager and even clear my ram cache, so technically it should be like idle with nothing running
and yet it shows 60% CPU usage and 100MB or ram used somewhere, no idea where

colonels said:
but i stop all APPs in task manager and even clear my ram cache, so technically it should be like idle with nothing running
and yet it shows 60% CPU usage and 100MB or ram used somewhere, no idea where
Click to expand...
Click to collapse
OS Monitor from market to check what is eating the cpu.
Sent from my GT-I9100 using XDA App

Doesn't clicking on battery usage show the same thing.
Do the other apps do something different.
Sent from my GT-I9100 using XDA App

zoro25 said:
Doesn't clicking on battery usage show the same thing.
Do the other apps do something different.
Sent from my GT-I9100 using XDA App
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Click to collapse
this shows total usage between 100% charges of battery, so what might be the highest CPU % usage might not be what is currently stuck in a feedback loop
i want to see what process or app is "stuck" in a loop or on cycle that is causing the slow charging and hot phone bug
when i stop all apps in task manager and clear ram (which usually kills 19 processes in the background) i should be at 90%+ idle
i need an app that can show me a snapshot of what is running on demand and doesn't show what was running before but was stopped

What does the battery usage screen tell you? After trying to charge, unplug the phone and leave it for 30 minutes. Then open up the battery usage page and check which item is consuming battery power.

my phone was getting hot when i was using custom kernel and had overclocked
check your kernel first

colonels said:
i want to see what process or app is "stuck" in a loop or on cycle that is causing the slow charging and hot phone bug
Click to expand...
Click to collapse
OS Monitor will tell you in real time which process is using up CPU cycles. However, battery usage shows you which app/process is using up the battery, which is what is happening to your phone. It is using up battery charge as fast as the charger is able to charge it. So check out which app has the highest percentage battery usage. If it is Android OS, then you will have to use OS monitor to dig deeper to pin point which Android OS process (there are many) is causing this.

so i identified the problem!
it is HANDCENT SMS (MEDIUM) WIDGET even though i do not have that widget loaded on any of my home screens
this gets somehow bugged and starts to use 30-40% CPU real time, and even after i force-close the process it comes right back in a few seconds
i have uninstalled HANDCENT SMS and my idle is back to 90%
i bet if you have the SLOW CHARGING HOT PHONE bug it is because of this widely popular SMS app, i am going to try GO SMS instead

Hi. I searched the forum for this problem. Just got an GSII three days ago. Experienced this a problem few minutes ago. Started charging my phone when I got home. It was at 36% at 46deg c. Then I talked to my friend on the phone. Checked back 30 mins later and it was at 33% at 53 deg c. It was the hottest the phone was ever. I panicked and unplugged it and shut the phone down. Turned it on 5 mins later and I just plugged it now.
Is my unit faulty?
Log when I plugged my phone into the charger until it reached 53 deg c:
2011/08/22|21:57:26|-678mA|35%|3810mV|41.0ºC|2|2
(must be when I plugged)
2011/08/22|22:02:26|58mA|36%|3762mV|46.0ºC|2|1
2011/08/22|22:07:26|-20mA|35%|3757mV|48.0ºC|0|1
2011/08/22|22:12:26|-165mA|35%|3703mV|50.0ºC|0|1
2011/08/22|22:17:26|-165mA|35%|3752mV|53.0ºC|0|1
2011/08/22|22:22:26|-165mA|35%|3752mV|53.0ºC|0|1
2011/08/22|22:27:26|-55mA|34%|3753mV|53.0ºC|0|1
2011/08/22|22:32:26|-55mA|34%|3768mV|53.0ºC|0|1
(unplugged, I shut phone down)
(booted up phone when it cooled and plugged charger again)
2011/08/22|22:46:18|-1mA|33%|3682mV|34.0ºC|1|0
2011/08/22|22:47:07|-1mA|33%|3726mV|34.0ºC|1|0
2011/08/22|22:52:07|-1mA|33%|3891mV|42.0ºC|2|2
2011/08/22|22:55:07|372mA|35%|3882mV|44.0ºC|2|1
2011/08/22|23:00:07|758mA|37%|3897mV|44.0ºC|2|1
2011/08/22|23:05:07|494mA|40%|3888mV|46.0ºC|2|1
2011/08/22|23:10:07|428mA|42%|3893mV|46.0ºC|2|1
2011/08/22|23:13:07|439mA|42%|3842mV|46.0ºC|1|1
2011/08/22|23:18:07|610mA|45%|3925mV|46.0ºC|2|1
2011/08/22|23:21:07|824mA|46%|3893mV|46.0ºC|2|1
2011/08/22|23:26:07|428mA|48%|3923mV|46.0ºC|2|1
2011/08/22|23:31:07|328mA|50%|3908mV|46.0ºC|2|1
2011/08/22|23:36:07|627mA|53%|3954mV|46.0ºC|2|1
2011/08/22|23:41:07|494mA|55%|3946mV|46.0ºC|2|1
EDIT: It's back to charging normally now. Temp at a stable 46deg c.

When I didn't rooted my phone, I also was experiencing overheating. Once I´ve rooted the phone and undervolted the phone and used kernel from Solarflare. Since then my phone didn´t overheat.

I wish we had a cpu temp reading as well as the battery temp one, I suppose the cpu usage will have to do, I think most overheating and slow charging is caused by power being used my the cpu as you charge the battery, some fault apps in conjunction with the heat of the battery produces when charging, really starts to heat things up.

Tinderbox (UK) said:
I wish we had a cpu temp reading as well as the battery temp one, I suppose the cpu usage will have to do, I think most overheating and slow charging is caused by power being used my the cpu as you charge the battery, some fault apps in conjunction with the heat of the battery produces when charging, really starts to heat things up.
Click to expand...
Click to collapse
I was just going to point this out as well. The same is true for a laptop. Recharging the laptop with the laptop power off will still generate some heat near the battery, but the moment you turn it on and start checking email, watching youtube, and doing all kinds of other stuff, core temps are going to be higher than usual as the battery charging heat adds on to it. So, I wouldn't be overly concerned with the overheating part just as long as it on a open surface like your desk and not wrapped up in a blanket on your bed.
With regards to the slow charging, that will directly be related to how much you use the phone, number of currently running apps, and number of background apps running (syncing, etc). I strongly suggest putting the display brightness level to lowest setting when at home while charging since this is the single largest consumer (50%) of battery power compared to anything else for me. If you do find that there are some less responsive apps stealing cpu cycles when it shouldn't, then I would consider uninstalling it altogether as it probably is also reducing your battery life during the day.

Thanks for the replies. I know the SII has a tendency to work up some heat and I'm just worried about damaging the internals. Does anyone know though what the maximum operating temperature is? So I could monitor my phone or turn it off when it reaches a certain temperature. I tried contacting Samsung about this but they didn't reply (their CS is bad in my country).

prinzhernan said:
Thanks for the replies. I know the SII has a tendency to work up some heat and I'm just worried about damaging the internals. Does anyone know though what the maximum operating temperature is? So I could monitor my phone or turn it off when it reaches a certain temperature. I tried contacting Samsung about this but they didn't reply (their CS is bad in my country).
Click to expand...
Click to collapse
same thing, i kinda worried with the internal parts, if it going too hot every time. Even only using wifi for browsing, it made a heat that really annoying

endoaja said:
same thing, i kinda worried with the internal parts, if it going too hot every time. Even only using wifi for browsing, it made a heat that really annoying
Click to expand...
Click to collapse
Yeah. I'd really like to know if it's okay that it gets hot a lot and at what temperature the internals get toasted. The manual says nothing about it.
Sent from my GT-I9100 using XDA Premium App

I would say 46c when charging is way too hot, Im even finding 41c already above the expected charging temperatures.

I have noticed Kernels having a lot to do with strange battery drain and overheating. I flashed back to a stock Australian Carrier Firmware and as soon as my phone restarted it was getting hot. I could feel it burning through the back and front of the phone. I flashed another kernel and the problem went away.

Motorola Atrix and Canadian Winters

Im a wireless technician and when I need to climb a tower I tend to leave my phones in the truck (work phone is a S2). After a couple of hours of the phones being in sub zero temperatures, the Atrix loses about 60 to 80 percent of battery. Well, thats what the OS is telling me. It will continue to work throughout the day at 1 percent. If I charge it from that point forward it wont charge past 70 to 90 percent. Depending on how long I used it at 1 percent. Only way to fix it is remove the batter after it has been in the charger all night and put it back on once the question mark is there. And I need to do this almost every night. If I leave the phone for 30 minutes it might drop 10 to 20 percent. But just enough to mess up.
This doesnt happen with the S2. It does drain faster but it is not noticeable. Anyone else notice this? Oh and my Atrix messes up big time in the humidity so I have something to look forward to this summer.. I doubt the phone will last long enough to get ICS.
And something else I noticed. After I pick up the phone after it has been in the cold for a couple hours I will check SetCPU to see what my cpu temperature is at. I have never seen it below 18 C. Makes me wonder how accurate it actually is. If the phone is room temperature at idle, my CPU temp will be 39C. I bet it is actually only at 25 to 30 C.

I first saw this behavior when I took my Atrix camping in December. The phone was at 95% when I turned it off at night, and in the morning when I turned it on, it was at 40%. Another guy camping with us had an iPhone with a similar drop, but I don't know what his percentages were.
This weekend I was in Utah skiing and fully experienced what you are talking about...the phone was on the charger all night and it would only go to 70%. I pulled the battery and after the restart it was at 99%. This was in my heated hotel room and not outside.
I think the cold weather in general causes batteries to go crazy. Have a read:
http://batteryuniversity.com/learn/article/discharging_at_high_and_low_temperatures

I have the exact same thing happen to me as the OP and it has been happening for a long time even after i got a refurbished atrix so it is definatly something to do with the battery and not the phone itself. Damn cold Canadian winters
Sent from my MB860 using xda premium

Ratchet556 said:
I have the exact same thing happen to me as the OP and it has been happening for a long time even after i got a refurbished atrix so it is definatly something to do with the battery and not the phone itself. Damn cold Canadian winters
Sent from my MB860 using xda premium
Click to expand...
Click to collapse
Hey we can't complain. Its very mild, well here anyways. And I love wasaga. Best may long weekend place to go!
And as far as the issue.. I have noticed it with my iPhone but once charged it was always go to 100 percent. Sucks that ours really messes up.

There is a wealth of information about lithium ion batteries if you look for it. They perform better in colder temperatures. They self-discharge slower in colder temperatures. Their lifecycle degrades slower in cold temperatures.The only real drawback is that the need to be warm to pass full current, so an extremely cold battery might not power your device properly until it warms slightly. If you let your battery discharge all the time it will severely decrease it's lifecycle, as lithium ion does not cope well with this.
NASA requires that their lithium ion batteries perform to -80C.
Remember that the batteries also have protection circuitry for safety. This may be set up in the Atrix batteries to discharge rapidly under certain circumstances.
I believe you can get a rapid discharge though if you go from an extreme cold temperature to a very warm temperature quickly, which could be the case if a phone sits in a truck all day at sub-zero temps, then you jump in, start it up, and start cranking the heat.
http://batteryuniversity.com/

Never had that happen.
Had the temp down to 12 C on the phone.
It did get a little hot during the summer months.

g2tegg said:
Hey we can't complain. Its very mild, well here anyways. And I love wasaga. Best may long weekend place to go!
And as far as the issue.. I have noticed it with my iPhone but once charged it was always go to 100 percent. Sucks that ours really messes up.
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Living here you come to know that May long weekend is the WORST time of year because the majority of tourists are jerks! Fun to watch them get arrested though Right now its cold as hell. And yea it kinda of sucks, no matter what i do i can't make it read 100% it just goes up to that on its own sometimes. One time i had my battery last 3 hours sitting at 1%.
Sent from my MB860 using xda premium

I've had my atrix shut off on me while skiing a few times. Get home and plug it in and it has plenty of juice...just cant push out enough current to power the phone properly.

My phone sits in my work truck all day (since its not intrinsically safe) and even when the temp is well below zero it never fails to come off the vehicle dock without a full charge just that sometimes it thinks 40% or 70% is a full charge fixed it pretty much the same way as you guys described. Other than that in low temps the touch screen responsiveness is sometimes an issue and ocassionally the external sd card wont show up until it warms up. but overall a reliable phone considering the abuse it takes. wonderfull build quality from motorola as usual.
However... I think heat is a bigger issue as I managed to melt my first vehicle dock this summer when it hit 34C in Calgary. The suction cup and part of the stem remained on the windshield but luckly the phone fell to the floor in the shade.
Really surprised I haven't seen any pix of melted atrix on the internet unlike the S2 & Iphone4